IMPRESSIONS is an EU-funded project that is advancing understanding of the consequences of high-end climate change (global average temperatures > 2°C). The project is developing an integrated set of multi-scale, high-end climate and socio-economic scenarios and applying them to improved models for analysing impacts and vulnerability. Adaptation and mitigation pathways are being generated with stakeholders to inform integrated and transformative solutions to these uncertain, but potentially high-risk, scenarios of the future.s.